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GSD-2020-13163

Vulnerability from gsd - Updated: 2021-05-24 00:00
Details
em-imap 0.5 and earlier use the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.
Aliases
Aliases
CVE-2020-13163
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{
  "GSD": {
    "alias": "CVE-2020-13163",
    "description": "em-imap 0.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.",
    "id": "GSD-2020-13163"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "em-imap",
            "purl": "pkg:gem/em-imap"
          }
        }
      ],
      "aliases": [
        "CVE-2020-13163",
        "GHSA-4f68-49qq-h392"
      ],
      "details": "em-imap 0.5 and earlier use the library eventmachine in an insecure way\nthat allows an attacker to perform a man-in-the-middle attack against users of the\nlibrary. The hostname in a TLS server certificate is not verified.\n",
      "id": "GSD-2020-13163",
      "modified": "2021-05-24T00:00:00.000Z",
      "published": "2021-05-24T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/advisories/GHSA-4f68-49qq-h392"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.4,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Improper certificate validation in em-imap"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-13163",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "em-imap 0.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified."
          }
        ]
      },
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                "value": "n/a"
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/ConradIrwin/em-imap/issues/25",
            "refsource": "MISC",
            "url": "https://github.com/ConradIrwin/em-imap/issues/25"
          },
          {
            "name": "https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap",
            "refsource": "MISC",
            "url": "https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap"
          }
        ]
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2020-13163",
      "cvss_v3": 7.4,
      "date": "2021-05-24",
      "description": "em-imap 0.5 and earlier use the library eventmachine in an insecure way\nthat allows an attacker to perform a man-in-the-middle attack against users of the\nlibrary. The hostname in a TLS server certificate is not verified.\n",
      "gem": "em-imap",
      "ghsa": "4f68-49qq-h392",
      "title": "Improper certificate validation in em-imap",
      "url": "https://github.com/advisories/GHSA-4f68-49qq-h392"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "=0.5",
          "affected_versions": "Version 0.5",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-295",
            "CWE-937"
          ],
          "date": "2021-03-04",
          "description": "em-imap uses the library eventmachine insecurely, allowing an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified.",
          "fixed_versions": [],
          "identifier": "CVE-2020-13163",
          "identifiers": [
            "CVE-2020-13163"
          ],
          "not_impacted": "",
          "package_slug": "gem/em-imap",
          "pubdate": "2020-05-19",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "Improper Certificate Validation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-13163"
          ],
          "uuid": "f1218f9d-c2d4-4b22-98f0-0c0fac27f7cb"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:em-imap_project:em-imap:0.5:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-13163"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "em-imap 0.5 uses the library eventmachine in an insecure way that allows an attacker to perform a man-in-the-middle attack against users of the library. The hostname in a TLS server certificate is not verified."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-295"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/ConradIrwin/em-imap/issues/25",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://github.com/ConradIrwin/em-imap/issues/25"
            },
            {
              "name": "https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://securitylab.github.com/advisories/GHSL-2020-095-conradirwin-em-imap"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2021-03-04T21:20Z",
      "publishedDate": "2020-05-19T22:15Z"
    }
  }
}



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